Cross-linked polyolefin material blend molded electrical transmission insulating products

Abstract

A new cross linked polyolefin material combination that is designed to replace current high-density polyethylene (“HDPE”) materials for use with molded or over-molded electrical transmission products. Such molded or over-molded electrical transmission products include, for example, vise-top pin insulators, line post insulators, F-neck, C-neck, and J-neck pin insulators of classes ANSI 55-3, 55-4, and 55-5, Spacer cable spacers, Brackets, hangers, Line post sensors, cable restraint insulators, and transmission style insulators.

Description

RELATED APPLICATIONS[0001]This application is a continuation-in-part of U.S. application Ser. No. 11 / 356,658, filed Feb. 10, 2006, currently pending, the disclosure of which is hereby incorporated by reference in its entirety.BACKGROUND[0002]The present technology relates to polymer material blends, products containing such blends that are manufactured for the electrical utility market, and methods of manufacturing such products. In particular, the polymer material blends described herein can be cross-linked polyolefin blends that, upon molding, have characteristics compatible with the requirements of electrical utility products. Insulator products that can find application with the polymer material blends described herein can be from a number of electrical insulator devices including, but are not limited to, vise-top insulators; pin insulators; line post insulators; F-neck, C-neck, and J-neck pin insulators of classes ANSI 55-3, 55-4, and 55-5; Spacer cable spacers, Brackets, hange...

AI Technical Summary

Benefits of technology

[0006]A new material combination that is designed to replace current high-density polyethylene (“HDPE”) materials for use with electrical transmission products is disclosed herein. The new material combination is a blended material that can provide all of the existing properties found in the HDPE material with the addition of a higher temperature capability at or above 250° C. The component materials used in the blended material are offered by multiple suppliers. The combination of components at or about the preferred percentage level by weight imparts the desired balance of electrical and physical properties. One of the components can be made up of ingredients that add color, long-term stability from UV exposure, and track resistance. Other ingredients can be added to promote adhesion such that the new material combination may be over-molded to a structural material such as a fiberglass rod to add cantilever strength to the over-molded insulator after the molding process. The result of this material combination is an insulator that will meet or exceed the American National Standards Institute (ANSI) requirements and have an elevated temperature capability.

Problems solved by technology

However, the typical HDPE material has a temperature limitation at / below 120° C.

Polyurethane insulators are typically used in such applications since currently utilized HDPE materials cannot meet such thermal conditions.

Images